Home › Forums › Continuing education › Bitemarks in forensic odontology
Welcome Dear Guest
To create a new topic please register on the forums. For help contact : discussdentistry@hotmail.com
- This topic has 4 replies, 3 voices, and was last updated 15/06/2011 at 2:22 pm by Drsumitra.
-
AuthorPosts
-
01/04/2011 at 5:30 pm #11842sushantpatel_docOfflineRegistered On: 30/11/2009Topics: 510Replies: 666Has thanked: 0 timesBeen thanked: 0 times
Person identification is important in criminology, and forensic odontologists are key personnel for identifying a highly individual dentition which could cause a bitemark and which could be used to convict or exculpate a suspect. Bitemarks may be observed in skin, wax, from a dental model indirectly from a photograph, a scanned image of a dental model or food. This paper shows that bitemarks constitute reliable evidence for person identification and that a tolerance of approximately 1mm existed between measurements of a wax bite, dental model, photograph and computer scanned image.
01/04/2011 at 5:33 pm #17033sushantpatel_docOfflineRegistered On: 30/11/2009Topics: 510Replies: 666Has thanked: 0 timesBeen thanked: 0 times02/04/2011 at 6:05 pm #17034DrsumitraOfflineRegistered On: 06/10/2011Topics: 238Replies: 542Has thanked: 0 timesBeen thanked: 0 timesTed Bundy was a killer. Not only was he a killer but he was a serial killer. He rampaged through a large part of the United States killing and brutalizing women from 1974 until his eventually capture in 1978(Ramsland, 2004). He was captured twice and managed to escape twice. Under stress from life as a fugitive he made the fatal mistake which would lead to his conviction and eventual execution.
Ted Bundy bludgeoned, raped and tortured more than 30 women. Some estimates are closer to forty. Yet he did not fit the profile of a killer. He was intelligent and some say handsome. He seemed to have a future as a lawyer. He killed most of his victims without leaving any traceable evidence. In some cases the bodies were not found until years later. In most cases he left no fingerprints or other traceable evidence. DNA was recovered but could not be matched conclusively to Ted Bundy( Ramsland, 2004).
There are many theories as to why a young intelligent man would become a violent, sadistic killer of young women. I personally think that as a shy young man he was frustrated by a relationship in which he felt inferior. When the woman of his dreams, who he had professed love, broke off there relationship the rage in him grew. He had worked as a volunteer counselor at a rape crisis hotline (Rule, 1991). In his rage against the failure of his relationship he sought to inflict the most pain he could on women especially those who looked like his ex-girlfriend.
He had been dumped by a beautiful young woman fitting for his role as a lawyer (He studied law briefly but was not a lawyer). He had worked as a rape crisis counselor where he had the perfect opportunity to hear and feel what hurt women the most. He dearly wanted to hurt the woman who had hurt him. He couldn’t really hurt her so he raged against women who looked like her in the beginning. In the end the thrill of the kill was what mattered to him and the look of the victim no longer mattered.
Maybe he was sexually aroused by the anger and pain of the rape crisis line victims he counseled. Ted Bundy’s motivation for his brutality will remain a mystery but it was probably a combination of these and other factors.
After escaping from custody in Aspen, Colorado not once but twice he fled to Florida. There he went on a deadly rampage at the Chi Omega Sorority house leaving two women dead and two badly injured all in a matter of hours.
He succumbed to his rage and bit one of his victims on the buttock and once on the breast. Lisa Levy was dead but on her buttock Ted Bundy had left a piece of evidence which could be used to link him to the crime. In conjunction with the testimony of witness who saw him flee the Chi Omega Sorority House his own dental impression helped convict him and sent him to the electric chair.
He did not bite Lisa Levy’s buttock once but twice. The first bite showed a full and complete bite mark. The second bite was rotated so that there were two impressions of the lower teeth. The top teeth stayed in place while the lower teeth where rotated (Ramsland, 2004). The second set of impressions gave investigators more points for comparison increasing the probability of a match.
The analysis of the bite marks on Lisa Levy’s buttock was only possible because of the actions of a quick thinking crime scene investigator who took pictures at the scene. The investigator had the forethought to include a ruler in the photo to show scale. The existence of this photograph was pivotal in convicting Bundy. Without the photograph he may have been acquitted. The bite mark had been incised from the buttock for analysis but had degraded and was no longer useful as evidence by the time of the trial (from http://www.crimelibrary.com). The only evidence of the original size and shape of the bite mark was the photograph taken at the scene.
After his arrest for the Chi Omega Sorority murders forensic odontologist (dentist) Dr. Richard Souviron examined Bundy’s teeth (with the aid of a warrant) and took photographs of his upper and lower teeth (Innes, 2000). In court he used enlarged photographs to show the jury the unique characteristics of Bundy’s teeth. Next he used a transparent overlay of Bundy’s teeth and placed it over an enlarged photograph of the bite mark (Innes, 2000). The two seemed to match. Finally, the chief consultant in forensic dentistry to New York City’s Medical Examiner, Dr. L. Lavine , confirmed Souviron’s findings. He testified that from the position and measurements of the bite mark he could tell that Lisa was no longer struggling when it was made. The Jury was convinced that Bundy was the one who bit Lisa Levy.
Bite mark analysis had shown that his teeth had created the injuries to Lisa Levy most likely after she was dead or near to death.
According to the eyewitness account of Nita Neary Ted had run from the sorority house with a log rapped in cloth (the weapon used to club his victims) (Innes, 2000).
He was convicted and sentenced to die in Florida’s electric chair.
The combination of a quick a thinking investigator, a skilled photographer and two highly credible expert witnesses made bite mark analysis pivotal in the conviction of a monster. Ted Bundy was not the first or the last to be convicted on analysis of a bite mark but he certainly was the most famous.
03/04/2011 at 10:22 am #17041Anonymous15/06/2011 at 2:22 pm #17335DrsumitraOfflineRegistered On: 06/10/2011Topics: 238Replies: 542Has thanked: 0 timesBeen thanked: 0 timesThe adjective "forensic" refers to the application of this subfield of science to a court of law. Forensic anthropologists study the human skeleton in a legal setting.
A forensic anthropologist can assist in the identification of a decedent through various skeletal analyses that produce a "biological profile". One part to a biological profile is a person’s racial/ancestral affinity.
People with considerable European ancestry generally have relatively no prognathism; a relatively small face; a narrow, tear-shaped nasal cavity; a "silled" nasal aperture; tower-shaped nasal bones; a triangular-shaped palate; and an angular and sloping eye orbit shape.
People with considerable African ancestry typically have a broad and round nasal cavity; no dam or nasal sill; Quonset hut-shaped nasal bones; notable facial projection in the jaw and mouth area (prognathism); a rectangular-shaped palate; and a square or rectangular eye orbit shape.
People with considerable East Asian ancestry are often characterized by a relatively small prognathism; no nasal sill or dam; an oval-shaped nasal cavity; tent-shaped nasal bones; a horseshoe-shaped palate; and a rounded and non-sloping eye orbit shape.[4]
It is important to note that many of these characteristics only have a higher frequency among particular races and the presence or absence of one or more does not automatically classify an individual into a racial group. Forensic anthropologists utilize the Fordisc program to help in the interpretation of craniofacial measurements in regards to ancestry/race determination.
[edit] In paleoanthropologyPaleoanthropologists use craniofacial anthropometry in the study of fossilized hominid bones in order to identify the species. Specimens of Homo erectus and athletic specimens of Homo sapiens, for example, are virtually identical from the neck down but their skulls can easily be told apart.
-
AuthorPosts
- You must be logged in to reply to this topic.